RU2395777C2 - Small arm firing mechanism - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: firing mechanism for bullpup-type mounted submachine gun comprises spring-loaded hammer cocked by breech frame that doubles as a linearly travelling hammer element after first shot in fixed burst when firing element recoils inside guide half stock. Hammer is arranged inside rotary breech block and incorporates return spring. Breech frame comprises additional assembly to transfer impact pulse to hammer after short in fixed gun burst. Aforesaid assembly comprises spring-loaded guide component sliding in its guide lengthwise slot made in said guide half-stock inner surface and automatic outage of said additional assembly at preset moment of shooting said gun burst. Note here that said moving component can transfer impact pulse to submachine gun striker.

EFFECT: higher reliability.

2 cl, 2 dwg

Description

The invention relates to weapons, in particular to percussion mechanisms, and can be used in individual small arms of the “gun-mounted machine” class, equipped with a “firing unit”, which moves forward inside the “guide bed” to increase the length of its recoil before producing a “fixed queue” "

Known strike mechanism of weapons / Kalashnikov magazine, No. 5/2007, pp. 6-12, see description: 5.45 mm AN-94 gun-machine gun, designer Nikonov G.N., IZHMASH, Russia / - containing a linearly moving “trigger element”, made with the possibility of coupling with the bolt frame after the first shot in a “fixed queue” - to increase the rate of fire, there is also a hammer that is placed inside the rotary bolt of this weapon.

The disadvantage of this device is the need to increase the length and, accordingly, the weight of the receiver of the “firing unit” of weapons for a linearly moving trigger, which complicates the conditions for the layout of the bullpup for the “gunned” machine.

Known weapon striking mechanism / Kalashnikov magazine, No. 1/2004, pp. 10-16, see description: 5.45-mm experimental gun-mounted machine gun TKB-0146, designer I. Stechkin, TsKIB SOO, Tula, Russia /, which is the closest analogue in technical essence to the declared object, because it is placed on a bullpup layout weapon and contains a hinged rotating trigger equipped with a “combat” spring, with the possibility of impact on the hammer only for firing the first shot in a “fixed queue”, after which the linearly moving “trigger” automatically switches to the slide frame of this “Carriage” machine.

The disadvantage of this device is its lack of adaptability to a “gunny” machine gun, the “firing unit” of which is previously moved inside its “guide bed” from a rear “fixed” position to a forward position to increase the length of its rollback to produce a “fixed” queue.

The technical task is to adapt the percussion mechanism of a weapon of the “carriage automaton” class to a subclass of such a weapon, the “firing unit” of which is moved forward inside its “guiding bed” to produce a “fixed” line.

The technical result is achieved by the fact that the impact mechanism of individual small arms - the gun-gun type, the bullpup layout contains a spring-loaded articulated trigger with the possibility of cocking the latter by means of a sliding bolt frame, which also has the function of a linearly moving "trigger" element, with the possibility of acting on the hammer after the first shot in the “fixed” line when the “firing unit” is rolled back inside its “guiding bed”, the drummer is also placed inside the rotating ator and equipped with a return spring, while the “firing unit” of weapons for the production of a “fixed” line, the number of shots in which can be more than two, moves forward inside its “guiding bed” from its rear position, and in the breech of the bolt frame this unit "there is a guide sleeve located transversely and above the breech of the drummer and provided with a slot that passes into the" support groove "for the passage of the" combat ledge ", which is spring-loaded on the movable inside the" guide sleeve oh the male sleeve ", wherein the" warhead "of the latter is a shield" located on the side of the breech end of the drummer with the possibility of supporting the rear during lateral movement of the male sleeve under the action of its return spring, placed inside the said pair of telescopically connected sleeves with emphasis on facing each other from another bottom, and the bottom of the movable sleeve protruding beyond the slice of the stationary guide sleeve interacts with the "breech protrusion" or with the "muzzle protrusion" placed on the inside the lateral surface of the side wall of the “guide bed” on a conditional longitudinal line connecting the position points of the said bottom of the movable sleeve in the rear and accordingly front position of the “firing unit” inside its “guide bed”, and the positions of the said pair of “protrusions” provide the possibility of lateral removal of the movable the sleeve with compression of its return spring and, accordingly, displacement laterally from the breech end of the striker of the said shield-shaped “combat ledge of the“ movable ”sleeve, is carried out only in the “back” position of the “firing unit” with the possibility of firing all types of fire, except for the “fixed” line-up, and the “forward” position of the “unit” with the ability to fire only the first shot in the “fixed” line with the possibility of subsequent firing carried out at a high rate of fire, by acting on the firing pin of a rolling bolt carrier, which already has been freed from the influence of the “muzzle protrusion”, a spring-loaded movable sleeve, “combat dull ”which is supported by the rear of the firing pin, and there is the possibility of moving the“ firing unit ”from the rear to the“ front ”position of the support of the combat rib of the said“ fighting protrusion ”of the movable spring sleeve on the side surface of the breech section of the striker, which protrudes beyond the breech section of the bolts and, accordingly, the release of the striker and a combat ledge, when the “firing unit” reaches its forward position inside the “guide bed”, in addition, there is a spring bar connected at one end to the bolt th frame and the other end part of the corresponding "slot" on the side surface and the movable telescopically joined, serving as the "limiter" motion to the spring-loaded movable sleeve.

Distinctive features in the claimed combination exhibit a new property - the ability to perform an additional function of the bolt frame of the weapon as a linearly moving “trigger” element by means of an additional unit, a spring-loaded transverse slider coupling of the latter with the breech end face of the striker to ensure a high rate of fire in the “fixed” mode.

The technical result is ensured by the fact that this device is adapted to a “gun-mounted automatic machine”, the “firing unit” of which, for the production of a “fixed” line, is preliminarily moved forward - inside its “guide bed”, while it is possible to engage the bolt frame and firing pin only after the first shots - in the “fixed” line, which is carried out by the articulated trigger of the trigger mechanism, as well as all other firing / except for the “fixed” line / in the rear position of the “firing unit” relative to its “guide bed”.

The invention is illustrated by drawings, where in: figure 1 shows a General view of the percussion mechanism having an additional node; side view, left; figure 2 shows a horizontal section aa / s figure 1 /.

The weapon’s percussion mechanism comprises: 1 / Fig. 1.2/ located on the bolt frame, a transverse “stationary sleeve” - 2, its “longitudinal slot” - 3, which passes into a “reference groove” - 4, and also a “transverse slot” - 5 other “longitudinal groove” - 6; also shown: the covered “movable sleeve” - 7 and its shield-shaped “combat protrusion” - 8, its “lateral protrusion” - 9, coupled to the “spring rod” - 10, having a rigid connection - 11 with the shutter frame 1; also shown: rotary bolt - 12, drummer - 13 and its return spring - 14; return spring - 15 for the “movable sleeve” 7, the “muzzle protrusion” - 16 and the “breech protrusion” - 17, located in the side wall of the “guiding bed” - 18 for the movable “firing unit” - 19, also containing the hinge trigger - 20 with return spring 21.

The shock mechanism operates as follows. For the production of a “fixed” line / of three or four shots / a “firing unit” / 19 / of a weapon is previously moved forward inside its “guiding bed” / 18 / to increase the length of the rollback of this “unit” to its rear “fixed” position. In this case, the outer lateral bottom end of the “movable sleeve” / 7 / interacts with the “muzzle protrusion” / 16 / placed on the side wall of the “guide bed” /, / as a result of which the “movable sleeve” / 7 /, compressing its “return spring” / 15 / , transversely moves inside its guide "fixed sleeve" / 2 /, located in the breech of the bolt frame / 1 /, transversely and above the hammer / 13 /. At the same time, the shield-shaped “warhead” / 8 / located on the “sleeve” / 7 / also transverse to the drummer is displaced along the “slot” / 5 / and the “support groove” / 4 /, going sideways from the rotating shutter protruding from the breech section / 12 /, the breech of the striker / 13 /, with the possibility of impact on the last spring-loaded articulated trigger / 20 / weapon, through which the first shot is fired in a "fixed" line. Further, due to recoil from the first shot, the said “firing unit” of the weapon begins to roll back to its rear position relative to its “guiding bed”, and the “muzzle protrusion” / 16 / with the “movable sleeve” / 7 / is released, which under its return springs / 15 / transversely moves the “combat ledge” / 8 /, which supports the breech end face of the hammer / 13 /, as a result of which the second and subsequent shots are fired in the “fixed” queue when the bolt frame / 1 / rolls over to the chamber. Moreover, with a high rate of fire, because the shutter frame in this case acts as a linearly moving “trigger” element. At the same time, the operating mechanism for locking the articulated trigger is not described in this application, because it was drawn up by the author as an independent application for invention No. 2008131662 dated July 30, 2008. Further, upon completion of the rollback of the “firing unit” to its rear “fixed” position inside the “guiding bed” / 18 / of the weapon, said spring-loaded “movable sleeve” / 7 / with its lateral bottom end interacts with the “breech protrusion” / 17 / placed on the side wall of the “guiding bed” on a common conditional line with the aforementioned “muzzle protrusion” / 16 /, and the above-described mechanism for disengaging the bolt frame / 1 / and the hammer / 13 / repeated. Moreover, in the rear position of the “firing unit” relative to its “guiding bed” / 18 / by means of the aforementioned articulated trigger / 20 /, all other firing modes of this weapon are carried out. In addition, when assembling this device, the "spring sleeve" / 7 / is prevented from falling out of its guide "fixed sleeve" / 2 / through the free end of the "spring rod" / 10 /, which passes into the "transverse slot" / 5 / of the existing groove / 6 / of the “open” end of the “fixed sleeve” / 2 /, with the possibility of engagement with the “lateral protrusion” / 9 / available on the “movable sleeve” / 7 /, with the possibility of passage along the said “groove” / 6 / “guide sleeves ”/ 2 /.

The claimed invention is included in the group of other proposed inventions previously claimed by the author - as a project of a “new automatic carriage” of a new generation / in the basic version - ten proposed inventions / with the possibility of producing a “fixed” line of three to four shots, using the standard “intermediate "Cartridge - in this weapon.

Claims (2)

1. Small-arms automatic guns of the bullpup configuration, comprising a spring-loaded firing unit and its guiding bed, a spring-loaded articulated trigger, a striker, a bolt frame, which is capable of cocking the trigger and acting as a linearly moving trigger element with the possibility of acting on the striker after the first shot in a “fixed” queue when the spring-loaded firing unit rolls back inside the guiding bed, the firing pin is placed inside the rotating bolt and n return spring, characterized in that the firing unit for the production of a “fixed” line, the number of shots in which more than two, is made with the possibility of preliminary movement forward inside the guide bed from its rear fixed position, in the breech of the bolt frame is placed transversely and higher than the breech of the drummer part, a fixed sleeve serving as a guide for the movable sleeve covered by it with the formation of a telescopic connection, inside which is placed with emphasis on the bottom of said shells, a compression spring serving as a return spring for the movable shell, in a stationary shell from its open end, a longitudinal slot is made facing the striker and passing at its bottom into a persistent groove made on the breech of the bolt frame to the side of the striking breech end protruding from the shutter, at the same time, the mentioned slot and groove are made with the possibility of passage and support of the combat protrusion made on a movable sleeve in the form of a shield facing the drummer with the possibility of supporting the breech end face of the drummer with transverse movement under the action of the return spring of the movable sleeve, and the bottom of the movable sleeve protruding beyond the shear of the fixed sleeve interacts with breech or muzzle protrusions made on the inner surface of the side wall of the guide bed along the line connecting the extreme position of the bottom of the movable sleeve, which correspond to the front and rear the positions of the firing unit inside the guide bed, and said protrusions are configured to provide lateral displacement of the movable th sleeve when interacting with its bottom with compressing its return spring and moving its warhead laterally from the striker to impact on the breech end of the articulated hammer, the breech of the wall of the guiding bed is made with the possibility of maintaining all firing modes, except for the “fixed” line in the back the position of the firing unit, and the muzzle protrusion - only the first shot in the “fixed” queue by means of an articulated trigger, the combat protrusion of the movable sleeve rolled to the chamber of the bolt frame n with the possibility of engagement with the breech end of the striker when the firing unit rolls back and the movable sleeve is released, and the movable sleeve is made with the ability of the rib to engage with the side breech surface of the striker when the spring-loaded firing unit is moved to its forward position and until the movable sleeve is exposed to the bottom said muzzle protrusion of the wall of the guiding bed of the weapon, while the bolt frame contains a stroke limiter of the movable sleeve, keeping it from falling out and the fixed sleeve. 2. The weapon according to claim 1, characterized in that a transverse slot is made on the fixed sleeve to a longitudinal groove at its open end, a lateral protrusion is made on the movable sleeve, the travel stop is made in the form of a spring rod connected to one of its ends longitudinally and inseparably with bolt frame, and the second free end of the rod is made with the possibility of passage into the said transverse slot and engagement with the lateral protrusion of the movable sleeve.

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